Radionuclides in Chassigny and Nakhla meteorites of Mars origin: Implications for their pre-atmospheric sizes and cosmic-ray exposure ages
Sign Up to like & getrecommendations! Published in 2020 at "Planetary and Space Science"
DOI: 10.1016/j.pss.2020.104914
Abstract: Abstract Two Martian meteorites, Chassigny and Nakhla, were analyzed by non-destructive gamma-ray spectrometry to determine concentrations of cosmogenic (26Al) and primordial (40K, 238U, 232Th) radionuclides, and to estimate their pre-atmospheric sizes and cosmic-ray exposure ages.… read more here.
Keywords: chassigny nakhla; exposure ages; pre atmospheric; ray exposure ... See more keywords
The last glaciation in the headwater area of the Xiaokelanhe River, Chinese Altai: Evidence from 10Be exposure-ages
Sign Up to like & getrecommendations! Published in 2020 at "Quaternary Geochronology"
DOI: 10.1016/j.quageo.2020.101054
Abstract: Abstract The timing and extent of the last glaciation in the Altai Mountains are key to understanding climate change in this critical region. However, robust glacial chronologies are sparse across the Altai Mountains, especially in… read more here.
Keywords: exposure ages; chinese altai; exposure; xiaokelanhe river ... See more keywords
Impact of glacial isostatic adjustment on cosmogenic surface-exposure dating
Sign Up to like & getrecommendations! Published in 2019 at "Quaternary Science Reviews"
DOI: 10.1016/j.quascirev.2019.03.012
Abstract: Abstract Calculating cosmogenic-nuclide surface-exposure ages is critically dependent on a knowledge of the altitude of the sample site. Changes in altitude have occurred through time as a result of glacial isostatic adjustment (GIA), potentially altering… read more here.
Keywords: glacial isostatic; production; exposure ages; surface exposure ... See more keywords